Question

вычисли удобным способом   6*17*5,        24*8*5,    2*14*5,     4*19*5,   5*96*2, 138*0*3,   8*56*1,    25*7*4,    

Answer 1

Вычисли удобным способом 

6*17*5 = 17*5*6 = (10+7)*30 = 300 + 210 = 510

24*8*5 = (20+4)*40 = 800 + 160 = 960

2*14*5 = 14*2*5 = 14*10 = 140

4*19*5 = 19*4*5 = (10+9)*20 = 200 + 180 = 380

5*96*2 = 96*5*2 = 96*10 = 960

138*0*3 = 0*3 = 0

8*56*1 = 8*(50+6) = 400 + 48 = 448

25*7*4 = (20+5)*4*7 = (80+20)*7 = 7*100 = 700